Used as an intermediate in the synthesis of cephalosporin antibiotics, particularly in the production of cefazolin and related beta-lactam drugs. Its structure supports the formation of the thiazole ring system essential for antimicrobial activity. It plays a key role in constructing the side chain of these antibiotics, contributing to their stability and efficacy against bacterial infections. Also utilized in research for developing new semi-synthetic antibiotics with improved pharmacokinetic properties.